android - 语法错误，行中有多个标记

Question

ImageView ivCamera;

FlashLightControl = (Button)findViewById(R.id.flashcontrol);
ivCamera = (ImageView)findViewById(R.id.iv_camera);

Syntax error on token ";" ,, expected.

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- Multiple markers at this line
- Syntax error on token ")", { expected after    this token
- Syntax error, insert ";" to complete       FieldDeclaration
- Syntax error on token ".", ... expected
- Return type for the method is missing

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Syntax error, insert "}" to complete MethodBody

Answer 1

您需要命名 FlashLightControl 变量：

FlashLightControl flc = (Button)findViewById(R.id.flashcontrol);
ivCamera = (ImageView)findViewById(R.id.iv_camera);

另一方面，是否Button可以将其视为FlashLightControl实例？

也许你想要

Button flashLightControl = (Button)findViewById(R.id.flashcontrol);

Answer 2

您似乎缺少对象引用。请更改以下代码行：

FlashLightControl = (Button)findViewById(R.id.flashcontrol);

对此：

FlashLightControl flashControlName = (Button)findViewById(R.id.flashcontrol);

但是，这仅在FlashLightControl是类型Button或与之兼容时才有效。

希望这可以帮助。